If you wish to add your company's stamp, you'll just need to follow the following steps:
1. Head over to Profiles > Manage My Database > Company Details.
2. Click on "Edit" on the top right.
3. Under "Update stamp", click on "Choose File".
4. Once uploaded, click on "Save" on the top right.
How to show company stamp in payslips?
Under Profiles > Manage My Database > Company Details > Company Stamp, do ensure that you uncheck "Hide company stamp in payslip".
Once payroll is processed, company stamp will appear at the bottom right of payslips when you generate them.